0a20de728d
- Core.Scripting-005: DependencyExtractor.HandleTagCall now recognises raw-string literal paths by checking the StringLiteralExpression node kind instead of the legacy StringLiteralToken kind. - Core.Scripting-006: scope CompiledScriptCache failed-compile eviction with TryRemove(KeyValuePair) so a racing retry entry is not evicted. - Core.Scripting-008: document the per-publish assembly accretion as an accepted limitation in docs/VirtualTags.md. - Core.Scripting-009: enumerate the authoritative deny-list (namespace prefixes + type-granular denies) in the Phase 7 decision-#6 entry to match ForbiddenTypeAnalyzer. - Core.Scripting-011: pin ScriptSandbox.Build, ScriptContext.Deadband boundary semantics, and end-to-end factory + companion-sink integration. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
71 lines
2.9 KiB
C#
71 lines
2.9 KiB
C#
using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Core.Scripting;
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namespace ZB.MOM.WW.OtOpcUa.Core.Scripting.Tests;
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/// <summary>
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/// Locks the boundary semantics of <see cref="ScriptContext.Deadband"/>. The helper
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/// is the canonical "ignore small noise" predicate alarm authors compose into bigger
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/// expressions; subtle sign / boundary changes here would silently move the
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/// active-state edge of every consuming alarm. (Core.Scripting-011.)
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/// </summary>
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[Trait("Category", "Unit")]
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public sealed class ScriptContextTests
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{
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[Fact]
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public void Deadband_returns_false_when_difference_equals_tolerance()
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{
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// Strict greater-than comparison: a delta exactly equal to tolerance is
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// considered "within deadband" and must NOT trip.
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ScriptContext.Deadband(current: 10.5, previous: 10.0, tolerance: 0.5).ShouldBeFalse();
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}
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[Fact]
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public void Deadband_returns_true_when_difference_just_exceeds_tolerance()
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{
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// Any delta strictly greater than tolerance trips the deadband.
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ScriptContext.Deadband(current: 10.6, previous: 10.0, tolerance: 0.5).ShouldBeTrue();
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}
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[Fact]
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public void Deadband_returns_false_when_difference_just_below_tolerance()
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{
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ScriptContext.Deadband(current: 10.4, previous: 10.0, tolerance: 0.5).ShouldBeFalse();
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}
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[Fact]
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public void Deadband_is_symmetric_in_direction_of_change()
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{
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// Math.Abs ensures the helper trips identically whether the value rose or fell.
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ScriptContext.Deadband(current: 9.0, previous: 10.0, tolerance: 0.5).ShouldBeTrue();
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ScriptContext.Deadband(current: 11.0, previous: 10.0, tolerance: 0.5).ShouldBeTrue();
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}
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[Fact]
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public void Deadband_returns_false_when_values_are_equal()
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{
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ScriptContext.Deadband(current: 10.0, previous: 10.0, tolerance: 0.001).ShouldBeFalse();
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}
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[Fact]
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public void Deadband_with_zero_tolerance_returns_true_for_any_difference()
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{
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// Zero-tolerance is the "trip on any non-equal change" mode. Equality still
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// returns false (delta 0 is not strictly greater than 0).
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ScriptContext.Deadband(current: 10.0, previous: 10.0, tolerance: 0).ShouldBeFalse();
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ScriptContext.Deadband(current: 10.0, previous: 10.000001, tolerance: 0).ShouldBeTrue();
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}
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[Fact]
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public void Deadband_with_negative_tolerance_always_trips_for_unequal_values()
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{
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// A negative tolerance is nonsensical input but the helper does not guard
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// against it — Math.Abs(delta) is always >= 0, so the comparison is
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// effectively "any non-equal change". Lock this so a refactor that adds
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// (or removes) input validation requires an explicit test update.
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ScriptContext.Deadband(current: 10.0, previous: 10.5, tolerance: -1.0).ShouldBeTrue();
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ScriptContext.Deadband(current: 10.0, previous: 10.0, tolerance: -1.0).ShouldBeTrue();
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}
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}
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